They and their hiring managers don't have the time to go through each resume individually, so they use software, often called applicant tracking systems (ats), to filter through all the resumes they receive. Learn how to use the right keywords, format your resume correctly, and nail the details that will get your profile to the people in charge. An ats (applicant tracking system) is an automated resume scanner used by over 90% of employers which reject over 76% of resumes submitted on average.